Completely redesign the melting pot

Read the docs. Maybe it is helpful for testing now.

Example usage:

$ melting-pot.sh net.imagej:imagej-common:0.15.1 \
    -r http://maven.imagej.net/content/groups/public \
    -c org.scijava:scijava-common:2.44.3-SNAPSHOT \
    -i 'org.scijava:*,net.imagej:*,net.imglib2:*,io.scif:*' \
    -e net.imglib2:imglib2-roi -v

Make sure you 'mvn install' scijava-common 2.44.3-SNAPSHOT first.

Author: ctrueden